Malicious PDF — malware analysis report

Static analysis result for SHA-256 21e01c7da02003a5…

MALICIOUS

PDF

43.9 KB Created: 2020-08-17 02:24:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5e3d1dbcfd95b4287046c2b34d9ab11f SHA-1: 83fc9a8cef67739741ba1f5d4258e4e102125aa6 SHA-256: 21e01c7da02003a5b75290e347babb0c14d6dfb2aeadc9c97355379f87fabe55
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, specifically pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains text related to a 'Dell latitude 5300 datasheet pdf' and references the 'wkhtmltopdf' tool, suggesting a lure to disguise malicious content. The presence of numerous embedded links, many pointing to Shopify domains hosting PDFs, further supports the link farm and potential redirection strategy.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=dell+latitude+5300+datasheet+pdf
    • http://files.mpvtbk.com/uploads/1/3/1/6/131607063/4348b025c10e.pdf
    • http://sadomov.ihsknightsboysbasketball.com/uploads/1/3/1/3/131379012/seduwu.pdf
    • http://files.yensawerth.com/uploads/1/3/0/7/130740252/7299526.pdf
    • http://guxin.futsalwithoutborders.org/uploads/1/3/1/6/131637814/wewepekomemi.pdf
    • http://files.courthousechristian.com/uploads/1/3/1/6/131636772/a8b8090c.pdf
    • https://cdn.shopify.com/s/files/1/0435/2029/5064/files/80806705039.pdf
    • https://cdn.shopify.com/s/files/1/0431/9579/3571/files/tisaxesalabozevu.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/webomobituwisumepepaxifi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9815/2866/files/adobe_illustrator_cs6_software.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/vofelowuloluvazoriwonub.pdf
    • https://cdn.shopify.com/s/files/1/0430/8277/6727/files/28108280769.pdf
    • https://cdn.shopify.com/s/files/1/0439/0918/5691/files/malaria_causes_symptoms_and_prevention.pdf
    • https://cdn.shopify.com/s/files/1/0436/0352/5794/files/calculus_6th_edition_larson_hostetler_edwards.pdf
    • https://cdn.shopify.com/s/files/1/0434/1635/4977/files/20055475817.pdf
    • https://cdn.shopify.com/s/files/1/0433/2870/0571/files/72696342991.pdf
    • https://cdn.shopify.com/s/files/1/0435/3861/2378/files/web_application_development_tools.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006b11.bin
9af2a607d97272c55c304a72542eec440499af418bd65694464abc43012ea9b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B11 5464 bytes
font_01_sfnt_off00007da5.bin
312c44349b430f978d1d24a656229271a23779fb98e30416207058fa796a24c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7DA5 10780 bytes

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